| Acronym | Definition |
|---|
| IMA | I Might Add |
| IMA | Inverse Multiplexing over ATM |
| IMA | Interactive Multimedia Association |
| IMA | Indianapolis Museum of Art |
| IMA | Installation Management Agency (US Army) |
| IMA | Incentive Marketing Association (Naperville, IL) |
| IMA | Investment Management Association (UK) |
| IMA | Institute for Mathematics and its Applications |
| IMA | Indian Medical Association |
| IMA | Institut du Monde Arabe (French: Arab World Institute) |
| IMA | Indian Military Academy |
| IMA | Integrated Motor Assist (Honda hybrids) |
| IMA | Internal Mammary Artery |
| IMA | Independent Management Architecture |
| IMA | Independent Music Awards (annual) |
| IMA | Individual Mobilization Augmentee |
| IMA | International Mineralogical Association |
| IMA | Integrated Modular Avionics |
| IMA | Interactive Media Awards (New York, NY) |
| IMA | Inferior Mesenteric Artery |
| IMA | Israel Medical Association |
| IMA | Institute of Modern Art (Australia) |
| IMA | Inverse Multiplexing for ATM |
| IMA | Institute of Marine Affairs (Trinidad and Tobago) |
| IMA | Intermediate Maintenance Activity |
| IMA | Ischemia Modified Albumin (Ischemia Technologies Inc.) |
| IMA | Internal Martial Arts |
| IMA | Informatics Association |
| IMA | Intramural Activities |
| IMA | Internet Merchant Account |
| IMA | Infarto Miocardico Acuto (Italian: Acute Myocardial Infarction) |
| IMA | International Magnesium Association (est. 1948; Wauconda, IL) |
| IMA | Investment Management Agreement (finance) |
| IMA | International Marinelife Alliance (USA) |
| IMA | Information Mission Area |
| IMA | Intermunicipal Agreement (state governments) |
| IMA | Inter Mutuelle Assistance (French: International Mutual Assistance) |
| IMA | Ideal Mechanical Advantage |
| IMA | International MIDI Association |
| IMA | Indiana Manufacturers Association (Indianapolis, Indiana) |
| IMA | Idaho Medical Association (Since 1893; Boise, Idaho) |
| IMA | Integrity Measurement Architecture (Linux software implementation) |
| IMA | Invasive Management Area |
| IMA | Individually Managed Account |
| IMA | Internal Maxillary Artery |
| IMA | Interchurch Medical Assistance, Inc. (New Windsor, MA) |
| IMA | Institute for the Musical Arts |
| IMA | Institute of Management Accountants, Inc. |
| IMA | International Music Academy (various locations) |
| IMA | Ion Mass Analyzer |
| IMA | Idaho Mining Association |
| IMA | Integrated Microwave Assembly |
| IMA | Icelandic Medical Association (Kópavogur, Iceland) |
| IMA | Information Management Area |
| IMA | International Music Association |
| IMA | Iowa Museum Association |
| IMA | Information Management Architecture |
| IMA | Illinois Mycological Association |
| IMA | Injected Metal Assembly |
| IMA | Indonesian Medical Association |
| IMA | Institute of Municipal Assessors (Canada) |
| IMA | International Maritime Association |
| IMA | Indian Management Academy (India) |
| IMA | Intelligent Mobile Agent |
| IMA | International Microsimulation Association (est. 2005) |
| IMA | International Mountainboard Association |
| IMA | Input Message Acknowledgement (ITU-T) |
| IMA | International Messaging Associates Corporation |
| IMA | Information Management Agency (US Army NGB) |
| IMA | Inventory Management Associate |
| IMA | Ineffective Machine Attempts |
| IMA | International Mycologycal Association |
| IMA | Institute Men's Association (Church of Jesus Christ of Latter-day Saints single men's group) |
| IMA | Ian MacDonald Architect, Inc. (Canada; est. 1984) |
| IMA | Implementation Management Authority |
| IMA | Intelligent Maintenance Aid |
| IMA | International Monovision Association |
| IMA | Idaho Military Academy |
| IMA | Incident Management Activity |
| IMA | Identity Management Application (computer security) |
| IMA | Institute of Mexicans Abroad |
| IMA | Independent Medical Assessor |
| IMA | Input Module Arbiter |
| IMA | Indústria Metalomecânica do Ave Lda (Portugal) |
| IMA | Intermodal Marketing Association |
| IMA | Installation Maintenance Activity |
| IMA | Intelligence Mission Analysis |
| IMA | Independent Manufacturing Assessment |
| IMA | Independent Marketing Area |
| IMA | International Medical Alliance, Inc. (Rancho Mirage, California) |
| IMA | Intermediate Maintenance Action |
| IMA | Inginerie si Menagement in Agroturism (Romania) |
| IMA | Immediate Medical Associates (walk-in medical clinics) |
| IMA | International Mobility Awards (education) |
| IMA | International Mergers and Acquisitions (Scottsdale, AZ) |
| IMA | Independent Mortgage Adviser (real estate) |
| IMA | Instrumental Methods of Analysis (conference) |
| IMA | Iinternational Marketing Association (Virgina Beach, VA) |
| IMA | Internet Merchants Association (trade association) |
| IMA | International Market Access (various locations) |
| IMA | Instant Messaging Application (software) |
| IMA | Irregular Maritime Arrival (Australia) |